Growth of nearly monodisperse palladium nanoparticles on disaggregated kaolinite lamellae

S. Papp, I. Dékány

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Palladium nanoparticles were prepared by in situ growth between kaolinite layers. Expansion of the interlayer space kaolinite was effected by intercalation of dimethyl sulfoxide (DMSO) at 65°C. The basal spacing increased from 0.72 to 1.12 nm during this process. After washing with methanol (partial displacement of DMSO ), nonionic poly(vinylpyrrolidone)/kaolinite, cationic poly(diallyldimethylammonium)/kaolinite and octylammonium/kaolinite complexes were generated by adsorbing the polymer or the surfactant from solution. Kaolinite samples containing palladium nanoparticles were prepared by hydrazine and NaBH4 reduction of palladium ions adsorbed from a solution of H2PdCl4 (pH 4). The size of the palladium particles formed was determined by transmission electron microscopy measurements which showed that nearly spherical, nearly monodisperse particles of size of about 1 nm were generated.

Original languageEnglish
Pages (from-to)94-100
Number of pages7
JournalProgress in Colloid and Polymer Science
Volume117
Publication statusPublished - Dec 1 2001

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Keywords

  • Intercalation
  • Kaolinite
  • Palladium nanoparticles
  • Polymer stabilization

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Polymers and Plastics
  • Colloid and Surface Chemistry
  • Materials Chemistry

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